What is an inhalattional anesthesia?

If anesthesia gas is: used, whether it is vapor (started with ether, now - sevoflurane or isoflurane) or actual gas ("laughing gas" nitrous oxide or xenone) to induce and maintain state of unconsciousness and insensibility to pain by breathing it in and out, it is called inhalational anesthesia. In pure form it is primarily used for short procedures in kids, in adults usu. as a component of balanced general anesthesia